US20050217445A1 - Miter saw having a light beam alignment system - Google Patents
Miter saw having a light beam alignment system Download PDFInfo
- Publication number
- US20050217445A1 US20050217445A1 US11/156,358 US15635805A US2005217445A1 US 20050217445 A1 US20050217445 A1 US 20050217445A1 US 15635805 A US15635805 A US 15635805A US 2005217445 A1 US2005217445 A1 US 2005217445A1
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- Prior art keywords
- saw
- workpiece
- blade
- light
- base
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- 239000007787 solid Substances 0.000 abstract description 4
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- 238000005520 cutting process Methods 0.000 description 8
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- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D59/00—Accessories specially designed for sawing machines or sawing devices
- B23D59/001—Measuring or control devices, e.g. for automatic control of work feed pressure on band saw blade
- B23D59/002—Measuring or control devices, e.g. for automatic control of work feed pressure on band saw blade for the position of the saw blade
- B23D59/003—Indicating the cutting plane on the workpiece, e.g. by projecting a laser beam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D59/00—Accessories specially designed for sawing machines or sawing devices
- B23D59/001—Measuring or control devices, e.g. for automatic control of work feed pressure on band saw blade
- B23D59/002—Measuring or control devices, e.g. for automatic control of work feed pressure on band saw blade for the position of the saw blade
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/06—Safety devices for circular cutters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/24—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/24—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves
- B23Q17/2404—Arrangements for improving direct observation of the working space, e.g. using mirrors or lamps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
- B27B5/29—Details; Component parts; Accessories
- B27B5/30—Details; Component parts; Accessories for mounting or securing saw blades or saw spindles
- B27B5/32—Devices for securing circular saw blades to the saw spindle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G19/00—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
- B27G19/02—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for circular saws
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/768—Rotatable disc tool pair or tool and carrier
- Y10T83/7684—With means to support work relative to tool[s]
- Y10T83/7693—Tool moved relative to work-support during cutting
- Y10T83/7697—Tool angularly adjustable relative to work-support
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/768—Rotatable disc tool pair or tool and carrier
- Y10T83/7734—With guard for tool
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/768—Rotatable disc tool pair or tool and carrier
- Y10T83/7755—Carrier for rotatable tool movable during cutting
- Y10T83/7788—Tool carrier oscillated or rotated
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/828—With illuminating or viewing means for work
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/828—With illuminating or viewing means for work
- Y10T83/839—Mirror or lens
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/849—With signal, scale, or indicator
- Y10T83/853—Indicates tool position
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/869—Means to drive or to guide tool
- Y10T83/8773—Bevel or miter cut
Definitions
- the present invention relates to a miter saw having a laser, or other light source, alignment system that uses a beam of light for positioning a saw blade.
- Miter saws are used to cut wood and other materials at precise angles. For example, miter saws are used to cut crown moldings, cove moldings, and other trim pieces and structural members at precise angles. Miter saws generally have a circular blade that is rotated at a high rate of speed to cut workpieces. The blade is guarded by a retractable blade guard that covers the saw blade but is retracted as the blade is brought into contact with a workpiece. The workpiece is generally retained on a supporting table that is adjustable and, in conjunction with a fence, is used to position the workpiece for cutting by the saw blade.
- a laser arbor for a rotary saw has been proposed in U.S. Pat. No. 5,862,727 to Kelly.
- the Kelly patent discloses the use of a semiconductor laser arbor for a rotary saw that is actuated by a centrifugal switch and directs a line of laser light on a workpiece.
- the Kelly patent does not disclose any shielding to prevent the laser from being directed into an operators eyes.
- U.S. Pat. No. 6,035,757 to Caluori et al. discloses a similar semiconductor laser light beam alignment device for a rotary saw having a focusing lens that causes the light beam to be directed to the blade cut line.
- the Caluori patent likewise fails to disclose any shielding that prevents the laser from shining into an operator's eyes.
- Both patents also fail to disclose an effective approach to preclude inadvertent operation of the laser when the arbor is disassembled.
- both patents fail to disclose a system for precisely aligning the laser with the point at which the blade cuts into the workpiece.
- FIG. 1 An example of a blade guard for a power saw is disclosed in U.S. Pat. No. 5,199,343 to O'Banion.
- the O'Banion patent discloses a louvered blade guard that an operator can see through while cutting a workpiece.
- the blade guard has tapered louvers that provide a line-of-sight through a portion of the guard while impeding ejection of cutting debris through the louvers.
- the O'Banion patent does not disclose or suggest a laser arbor for a rotary saw or any reason to combine the louvered blade guard disclosed with a laser alignment device.
- the saw having a laser alignment system that includes a laser arbor that rotates with the saw blade on the spindle.
- a miter saw (or other rotary saw) that includes a motor with a spindle to which a blade is secured and rotated by the motor to cut a workpiece that is disposed on a saw base.
- the motor is part of a saw head assembly that is pivotally supported on the base by an arm.
- a laser or other directed light source (hereinafter referred to as “laser” or “light source”) is mounted to the spindle and rotated by the motor along with the blade.
- the light source emits a narrow beam of light adjacent to the blade that is used to check the alignment of the blade with the workpiece.
- a movable guard pivots to cover at least a portion of the blade that is not engaging the workpiece.
- the guard has an opaque portion that blocks the beam of light to prevent the beam of light from being directed toward an operator of the saw.
- the miter saw described above may include a movable guard that is provided with a transparent area through which a narrow beam of light may pass to project a pattern of light.
- the light transparent area may be one or more transparent areas in the opaque portion of the guard, or the guard may be formed of a transparent material having one or more portions thereof that are covered by a mask.
- the transparent area may be formed as a single gap, or a pattern of slits, or gaps, in the mask and, if desired, in the guard. A solid or interrupted (dotted) line is thus formed on the workpiece.
- the narrow beam of light may be permitted to project beyond one end of the movable guard to form a solid line on the workpiece just prior to and while the blade engages the workpiece so that the operator can see the line of cut for the saw.
- the miter saw may include a saw base having a fence against which the workpiece may be pressed to locate one side of the workpiece.
- the saw base has a pivoting portion that pivots relative to the fence and may be locked in a selected angular orientation for making a miter cut in a workpiece.
- the movable guard cooperates with a fixed guard portion to substantially enclose the blade and block the beam of light except for an area encompassing the workpiece.
- the miter saw includes an arbor having an arbor base with a first mounting surface.
- a light source has a housing including a second mounting surface.
- the first and second mounting surfaces are secured together in a range of angular orientations for precisely aligning the light source.
- the mounting surfaces may be arcuate surfaces to facilitate alignment.
- the first and second surfaces may be secured together by a set screw or by a bonding agent.
- the invention may also be characterized as a miter saw including a light source that is battery powered.
- the light source is mounted to an arbor having and arbor base and a cover wherein the cover is removable from the base and when removed from the base carries with it at least battery. By removing at least one battery as the cover is removed, the light source is prevented from operating when the cover is removed from the arbor base.
- the arbor base may include spring contacts for establishing electrical contact with the batteries that are carried by the cover when the cover is removed from the arbor base.
- FIG. 1 is a side elevation view of a miter saw
- FIG. 2 is a front elevation view partially in cross section of a miter saw having a laser arbor
- FIG. 3 is a perspective view of a miter saw just prior to cutting a workpiece
- FIG. 4 is a fragmentary side perspective view of a miter saw having a plotted laser light line projecting on a workpiece;
- FIG. 5 is a fragmentary perspective view showing a solid laser line projected on a workpiece just prior to cutting
- FIG. 6 is a side elevation view of a movable guard
- FIG. 7 is a fragmentary view taken along line 6 - 6 in FIG. 5 ;
- FIG. 8 is a fragmentary front elevation view of a saw blade and laser arbor
- FIG. 9 is a plan view of a partially disassembled laser arbor
- FIG. 10 is a perspective view of a laser arbor having a laser module mounted on an arcuate mounting surface
- FIG. 11 is a cross-sectional view of a laser arbor having a laser module mounted on an arcuate mounting surface.
- the miter saw 10 having a circular saw blade 12 is shown.
- the miter saw 10 also includes a base 14 and fence 16 against which a workpiece 18 is located when the workpiece 18 is cut by the miter saw 10 .
- An arm 20 connects the motor assembly 22 that forms part of the saw head assembly, generally indicated by reference numeral 24 .
- the saw head assembly 24 includes a circular saw blade 12 and also includes a fixed guard 28 and movable shield 30 as well as a handle 32 that includes the power switch 34 .
- the saw 10 shown in the illustrated embodiment is a compound miter saw having a miter angle adjustment mechanism 38 and a tilt adjustment mechanism 40 . While the illustrated embodiment is of a compound miter saw, the invention is equally applicable to a simple miter saw, a sliding compound miter saw, or a chop saw.
- the saw head assembly 24 is pivotally connected to the arm 20 and includes a spring (not shown) for biasing the saw head assembly 24 out of engagement with the workpiece 18 .
- the operator grips the handle 32 and pulls it down toward the workpiece 18 as he depresses the power switch 34 causing the circular saw blade 12 to rotate.
- the miter angle adjustment mechanism 38 permits the base 14 to rotate relative to the arm 20 to change the transverse angle of cut.
- the tilt adjustment mechanism 40 allows the saw head assembly 24 to be pivoted and the transverse inclination of the blade to be adjusted.
- a miter saw 10 having a laser arbor 42 is illustrated.
- the laser arbor 42 is mounted adjacent the saw blade 12 on the same spindle 44 as the saw blade.
- the laser arbor 42 directs a laser beam 48 in a plane as the laser arbor 42 is rotated by the spindle 44 .
- the light beam is tilted toward the blade edge.
- the light source is described as a laser, another battery operated light source such as a light emitting diode (LED), focused electric light bulb based system or small flashlight could be used with the miter saw 10 .
- the structure of the laser arbor 42 will be more specifically described below with reference to FIGS. 8 and 9 .
- a light beam 48 is formed by a dot, directed in a plane tilted inwardly toward the blade edge.
- the light beam could be projected parallel to the plane of the circular saw blade 12 to indicate the starting edge of the blade cut.
- the miter saw 10 is shown just prior to the saw blade 12 cutting the workpiece 18 .
- the saw head assembly 24 has been pivoted on the arm 20 .
- the movable shield 30 has been rotated by the link 50 to a position partially overlying the fixed guard 28 .
- the movable shield 30 is still covering the portions of the saw blade 12 that are not within the fixed guard 28 and not adjacent the workpiece 18 .
- a dotted line 52 is projected on the workpiece 18 as shown in FIG. 4 when the power switch 34 is actuated and the movable shield 30 is in the position shown in FIG. 1 .
- the laser arbor forms a solid line 54 on the workpiece 18 as shown in FIGS. 6 and 7 .
- line 52 can be formed as a solid line instead of a dotted/dashed line.
- the dotted line shown in FIG. 4 permits the alignment of the workpiece with the base 14 to be immediately assessed by actuating the power switch 34 even prior to lowering the saw head assembly 24 .
- the shield 30 moves to the position shown in FIG. 3 , the solid line 54 formed by the laser beam 48 indicates the location of cut just prior to and during the cutting operation.
- the shield has a series of slits 56 or openings.
- the movable shield 30 may be formed of an opaque material or a transparent material. If the movable shield 30 is formed of a transparent material, an opaque mask 58 is provided on the peripheral edge 60 of the shield 30 that prevents the laser beam 48 from being projected upwardly toward the eyes of an operator.
- a range of normal operator eye position is indicated by reference numeral 62 .
- the range of normal operator eye position 62 corresponds to the expected position of an operator's eyes taking into account the expected eye level of any operator in a wide range of heights and also regardless of whether the operator is sitting or standing.
- the laser beam 48 is not permitted to be projected, in this normal eye position 62 , regardless of the position of the saw head assembly 24 .
- the laser beam 48 projects through the slits 56 to form the dotted line 52 on the workpiece 18 .
- the portion of the shield 30 including the slits 56 are shifted from between the saw blade 12 and the workpiece 18 .
- a single transparent area can be formed in the shield so that a solid line is formed on the workpiece when the shield is in the position of FIG. 1 .
- the laser arbor 42 includes a washer 64 upon which components are mounted and a cover 66 that covers and protects the laser arbor components mounted on the washer 64 , or arbor base.
- Laser arbor 42 includes a laser module 68 that is powered by batteries 70 .
- the batteries 70 are mounted in battery receptacles 72 a in the cover 66 .
- the batteries are received in cooperating battery receptacles 72 b (best seen in FIG. 10 ) formed in the washer 64 when the cover is properly placed on the base.
- Spring contacts 73 are provided on the washer 64 to establish electrical contact with the batteries when the cover 66 is properly secured to the washer 64 .
- the laser module 68 is operated by a reed switch 74 or equivalent centrifugally actuated switch.
- the reed switch 74 only supplies power to the laser module 68 when the saw blade 12 is rotated above the predetermined rotational speed.
- a printed circuit board 76 is provided to control the operation of the laser arbor 42 in conjunction with the reed switch 74 .
- the laser module includes a lens 78 that directs the laser beam 48 through an opening 80 in the laser arbor 42 .
- the laser module 68 may be mounted in the laser arbor 42 on the washer 64 , or arbor base, having an arcuate mounting surface 82 .
- the laser module 68 has a housing 84 that includes a complimentary arcuate mounting surface 86 .
- the laser module 68 is secured to the laser arbor with the arcuate mounting surfaces 82 , 86 in contact with each other.
- the laser module 68 is held on arcuate mounting surfaces 82 , 86 with the lens 78 and opening 80 disposed at a slight angle of inclination to be directed toward the teeth of the circular saw blade 12 .
- a set screw 88 , glue or other bonding agent is used to lock the laser module 68 on the mounting surface 82 .
- the laser module is preferably held at a slight angle relative to the saw blade so that the laser beam 48 is formed on the workpiece in alignment with the edge of the blades when the arbor is rotated.
- the laser beam 48 can be projected as close as possible to the point at which the saw blade 12 will cut the workpiece 18 so that markings corresponding to the desired location of cut on the workpiece 18 can be closely aligned with the laser beam 48 both when projected preliminarily as a solid or dotted line 52 and when projected as a solid line 54 .
Abstract
Description
- 1. Field of the Invention
- The present invention relates to a miter saw having a laser, or other light source, alignment system that uses a beam of light for positioning a saw blade.
- 2. Background Art
- Miter saws are used to cut wood and other materials at precise angles. For example, miter saws are used to cut crown moldings, cove moldings, and other trim pieces and structural members at precise angles. Miter saws generally have a circular blade that is rotated at a high rate of speed to cut workpieces. The blade is guarded by a retractable blade guard that covers the saw blade but is retracted as the blade is brought into contact with a workpiece. The workpiece is generally retained on a supporting table that is adjustable and, in conjunction with a fence, is used to position the workpiece for cutting by the saw blade.
- Before cutting, workpieces are generally marked according to precise measurements to assure accuracy. A common problem with miter saws is that it takes a great deal of skill to consistently align the workpiece with the saw blade so that the saw blade cuts at the desired location and at the desired angle. With prior miter saws, it has not been possible to know if the saw alignment is proper until the saw begins to cut the material. If the workpiece is not set up at the correct location with the correct angular orientation, the workpiece may be ruined if it is not properly aligned when the saw blade contacts the workpiece.
- A laser arbor for a rotary saw has been proposed in U.S. Pat. No. 5,862,727 to Kelly. The Kelly patent discloses the use of a semiconductor laser arbor for a rotary saw that is actuated by a centrifugal switch and directs a line of laser light on a workpiece. The Kelly patent does not disclose any shielding to prevent the laser from being directed into an operators eyes. Similarly, U.S. Pat. No. 6,035,757 to Caluori et al. discloses a similar semiconductor laser light beam alignment device for a rotary saw having a focusing lens that causes the light beam to be directed to the blade cut line. The Caluori patent likewise fails to disclose any shielding that prevents the laser from shining into an operator's eyes. Both patents also fail to disclose an effective approach to preclude inadvertent operation of the laser when the arbor is disassembled. Furthermore, both patents fail to disclose a system for precisely aligning the laser with the point at which the blade cuts into the workpiece.
- An example of a blade guard for a power saw is disclosed in U.S. Pat. No. 5,199,343 to O'Banion. The O'Banion patent discloses a louvered blade guard that an operator can see through while cutting a workpiece. The blade guard has tapered louvers that provide a line-of-sight through a portion of the guard while impeding ejection of cutting debris through the louvers. The O'Banion patent does not disclose or suggest a laser arbor for a rotary saw or any reason to combine the louvered blade guard disclosed with a laser alignment device.
- These problems are addressed by the saw having a laser alignment system that includes a laser arbor that rotates with the saw blade on the spindle.
- According to one aspect of the present invention, a miter saw (or other rotary saw) is provided that includes a motor with a spindle to which a blade is secured and rotated by the motor to cut a workpiece that is disposed on a saw base. The motor is part of a saw head assembly that is pivotally supported on the base by an arm. A laser or other directed light source (hereinafter referred to as “laser” or “light source”) is mounted to the spindle and rotated by the motor along with the blade. The light source emits a narrow beam of light adjacent to the blade that is used to check the alignment of the blade with the workpiece. A movable guard pivots to cover at least a portion of the blade that is not engaging the workpiece. The guard has an opaque portion that blocks the beam of light to prevent the beam of light from being directed toward an operator of the saw.
- According to another aspect of the invention, the miter saw described above may include a movable guard that is provided with a transparent area through which a narrow beam of light may pass to project a pattern of light. The light transparent area may be one or more transparent areas in the opaque portion of the guard, or the guard may be formed of a transparent material having one or more portions thereof that are covered by a mask. The transparent area may be formed as a single gap, or a pattern of slits, or gaps, in the mask and, if desired, in the guard. A solid or interrupted (dotted) line is thus formed on the workpiece.
- According to another aspect of the invention, the narrow beam of light may be permitted to project beyond one end of the movable guard to form a solid line on the workpiece just prior to and while the blade engages the workpiece so that the operator can see the line of cut for the saw.
- According to another aspect of the invention, the miter saw may include a saw base having a fence against which the workpiece may be pressed to locate one side of the workpiece. The saw base has a pivoting portion that pivots relative to the fence and may be locked in a selected angular orientation for making a miter cut in a workpiece.
- According to another aspect of the invention, the movable guard cooperates with a fixed guard portion to substantially enclose the blade and block the beam of light except for an area encompassing the workpiece.
- According to yet another aspect of the invention, the miter saw includes an arbor having an arbor base with a first mounting surface. A light source has a housing including a second mounting surface. The first and second mounting surfaces are secured together in a range of angular orientations for precisely aligning the light source. The mounting surfaces may be arcuate surfaces to facilitate alignment. The first and second surfaces may be secured together by a set screw or by a bonding agent. When the light source is rotated by the motor in conjunction with the blade, it emits a narrow beam of light adjacent the blade for providing a visual indication of the alignment of the blade with the workpiece.
- The invention may also be characterized as a miter saw including a light source that is battery powered. The light source is mounted to an arbor having and arbor base and a cover wherein the cover is removable from the base and when removed from the base carries with it at least battery. By removing at least one battery as the cover is removed, the light source is prevented from operating when the cover is removed from the arbor base. The arbor base may include spring contacts for establishing electrical contact with the batteries that are carried by the cover when the cover is removed from the arbor base.
- These and other aspects of the invention and advantages of the invention over the prior art will be better understood in view of the attached drawings and following detailed description provided below.
-
FIG. 1 is a side elevation view of a miter saw; -
FIG. 2 is a front elevation view partially in cross section of a miter saw having a laser arbor; -
FIG. 3 is a perspective view of a miter saw just prior to cutting a workpiece; -
FIG. 4 is a fragmentary side perspective view of a miter saw having a plotted laser light line projecting on a workpiece; -
FIG. 5 is a fragmentary perspective view showing a solid laser line projected on a workpiece just prior to cutting; -
FIG. 6 is a side elevation view of a movable guard; -
FIG. 7 is a fragmentary view taken along line 6-6 inFIG. 5 ; -
FIG. 8 is a fragmentary front elevation view of a saw blade and laser arbor; -
FIG. 9 is a plan view of a partially disassembled laser arbor; -
FIG. 10 is a perspective view of a laser arbor having a laser module mounted on an arcuate mounting surface; and -
FIG. 11 is a cross-sectional view of a laser arbor having a laser module mounted on an arcuate mounting surface. - Referring now to
FIG. 1 , a miter saw 10 having acircular saw blade 12 is shown. The miter saw 10 also includes abase 14 andfence 16 against which aworkpiece 18 is located when theworkpiece 18 is cut by the miter saw 10. Anarm 20 connects themotor assembly 22 that forms part of the saw head assembly, generally indicated byreference numeral 24. Thesaw head assembly 24 includes acircular saw blade 12 and also includes a fixedguard 28 andmovable shield 30 as well as ahandle 32 that includes thepower switch 34. - The
saw 10 shown in the illustrated embodiment is a compound miter saw having a miterangle adjustment mechanism 38 and atilt adjustment mechanism 40. While the illustrated embodiment is of a compound miter saw, the invention is equally applicable to a simple miter saw, a sliding compound miter saw, or a chop saw. Thesaw head assembly 24 is pivotally connected to thearm 20 and includes a spring (not shown) for biasing thesaw head assembly 24 out of engagement with theworkpiece 18. - When an operator is ready to make a cut with the miter saw 10, the operator grips the
handle 32 and pulls it down toward theworkpiece 18 as he depresses thepower switch 34 causing thecircular saw blade 12 to rotate. The miterangle adjustment mechanism 38 permits the base 14 to rotate relative to thearm 20 to change the transverse angle of cut. Thetilt adjustment mechanism 40 allows thesaw head assembly 24 to be pivoted and the transverse inclination of the blade to be adjusted. - Referring now to
FIG. 2 , a miter saw 10 having alaser arbor 42 is illustrated. Thelaser arbor 42 is mounted adjacent thesaw blade 12 on thesame spindle 44 as the saw blade. Thelaser arbor 42 directs alaser beam 48 in a plane as thelaser arbor 42 is rotated by thespindle 44. The light beam is tilted toward the blade edge. While the light source is described as a laser, another battery operated light source such as a light emitting diode (LED), focused electric light bulb based system or small flashlight could be used with the miter saw 10. The structure of thelaser arbor 42 will be more specifically described below with reference toFIGS. 8 and 9 . - As noted above, a
light beam 48 is formed by a dot, directed in a plane tilted inwardly toward the blade edge. Alternatively, the light beam could be projected parallel to the plane of thecircular saw blade 12 to indicate the starting edge of the blade cut. - Referring now to
FIG. 3 , the miter saw 10 is shown just prior to thesaw blade 12 cutting theworkpiece 18. Thesaw head assembly 24 has been pivoted on thearm 20. Themovable shield 30 has been rotated by thelink 50 to a position partially overlying the fixedguard 28. Themovable shield 30 is still covering the portions of thesaw blade 12 that are not within the fixedguard 28 and not adjacent theworkpiece 18. - In one embodiment described below in connection with
FIGS. 6 and 7 , a dottedline 52 is projected on theworkpiece 18 as shown inFIG. 4 when thepower switch 34 is actuated and themovable shield 30 is in the position shown inFIG. 1 . When thesaw head assembly 24 has been pivoted to the position shown inFIG. 3 , the laser arbor forms asolid line 54 on theworkpiece 18 as shown inFIGS. 6 and 7 . However, it will be appreciated thatline 52 can be formed as a solid line instead of a dotted/dashed line. - The dotted line shown in
FIG. 4 permits the alignment of the workpiece with the base 14 to be immediately assessed by actuating thepower switch 34 even prior to lowering thesaw head assembly 24. When theshield 30 moves to the position shown inFIG. 3 , thesolid line 54 formed by thelaser beam 48 indicates the location of cut just prior to and during the cutting operation. - Referring now to
FIGS. 6 and 7 , themovable shield 30 is shown in greater detail. The shield has a series ofslits 56 or openings. Themovable shield 30 may be formed of an opaque material or a transparent material. If themovable shield 30 is formed of a transparent material, anopaque mask 58 is provided on theperipheral edge 60 of theshield 30 that prevents thelaser beam 48 from being projected upwardly toward the eyes of an operator. As shown inFIGS. 1 and 3 , a range of normal operator eye position is indicated byreference numeral 62. The range of normaloperator eye position 62 corresponds to the expected position of an operator's eyes taking into account the expected eye level of any operator in a wide range of heights and also regardless of whether the operator is sitting or standing. Thelaser beam 48 is not permitted to be projected, in thisnormal eye position 62, regardless of the position of thesaw head assembly 24. - When the
shield 30 is in the position shown inFIG. 1 , thelaser beam 48 projects through theslits 56 to form the dottedline 52 on theworkpiece 18. When thesaw head assembly 24 is rotated and themovable shield 30 is pivoted by thelink 50 to the position shown inFIG. 3 , the portion of theshield 30 including theslits 56 are shifted from between thesaw blade 12 and theworkpiece 18. Instead of a series ofslits 56, a single transparent area can be formed in the shield so that a solid line is formed on the workpiece when the shield is in the position ofFIG. 1 . - Referring now to
FIGS. 8 and 9 , thelaser arbor 42 will be described in greater detail. Thelaser arbor 42 includes awasher 64 upon which components are mounted and acover 66 that covers and protects the laser arbor components mounted on thewasher 64, or arbor base.Laser arbor 42 includes alaser module 68 that is powered bybatteries 70. Thebatteries 70 are mounted inbattery receptacles 72 a in thecover 66. The batteries are received in cooperatingbattery receptacles 72 b (best seen inFIG. 10 ) formed in thewasher 64 when the cover is properly placed on the base. Spring contacts 73 are provided on thewasher 64 to establish electrical contact with the batteries when thecover 66 is properly secured to thewasher 64. Thelaser module 68 is operated by areed switch 74 or equivalent centrifugally actuated switch. Thereed switch 74 only supplies power to thelaser module 68 when thesaw blade 12 is rotated above the predetermined rotational speed. A printedcircuit board 76 is provided to control the operation of thelaser arbor 42 in conjunction with thereed switch 74. The laser module includes alens 78 that directs thelaser beam 48 through anopening 80 in thelaser arbor 42. - Referring now to
FIGS. 10 and 11 , thelaser module 68 may be mounted in thelaser arbor 42 on thewasher 64, or arbor base, having an arcuate mountingsurface 82. Thelaser module 68 has ahousing 84 that includes a complimentary arcuate mountingsurface 86. Thelaser module 68 is secured to the laser arbor with the arcuate mounting surfaces 82, 86 in contact with each other. Thelaser module 68 is held on arcuate mounting surfaces 82, 86 with thelens 78 andopening 80 disposed at a slight angle of inclination to be directed toward the teeth of thecircular saw blade 12. Aset screw 88, glue or other bonding agent is used to lock thelaser module 68 on the mountingsurface 82. To compensate for thelaser module 68 being slightly axially offset from thesaw blade 12, the laser module is preferably held at a slight angle relative to the saw blade so that thelaser beam 48 is formed on the workpiece in alignment with the edge of the blades when the arbor is rotated. In this way, thelaser beam 48 can be projected as close as possible to the point at which thesaw blade 12 will cut theworkpiece 18 so that markings corresponding to the desired location of cut on theworkpiece 18 can be closely aligned with thelaser beam 48 both when projected preliminarily as a solid or dottedline 52 and when projected as asolid line 54. - While embodiments of the invention have been illustrated and described, it is not intended that these embodiments illustrate and describe all possible forms of the invention. Rather, the words used in the specification are words of description rather than limitation, and it is understood that various changes may be made without departing from the spirit and scope of the invention.
Claims (26)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US11/156,358 US7398719B2 (en) | 2001-05-18 | 2005-06-17 | Miter saw having a light beam alignment system |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US09/860,898 US6755107B2 (en) | 2001-05-18 | 2001-05-18 | Miter saw having a light beam alignment system |
US10/774,854 US20040159199A1 (en) | 2001-05-18 | 2004-02-09 | Miter saw having a light beam alignment system |
US11/156,358 US7398719B2 (en) | 2001-05-18 | 2005-06-17 | Miter saw having a light beam alignment system |
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Application Number | Title | Priority Date | Filing Date |
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US10/774,854 Continuation US20040159199A1 (en) | 2001-05-18 | 2004-02-09 | Miter saw having a light beam alignment system |
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US20050217445A1 true US20050217445A1 (en) | 2005-10-06 |
US7398719B2 US7398719B2 (en) | 2008-07-15 |
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US09/860,898 Expired - Fee Related US6755107B2 (en) | 2001-05-18 | 2001-05-18 | Miter saw having a light beam alignment system |
US10/774,854 Abandoned US20040159199A1 (en) | 2001-05-18 | 2004-02-09 | Miter saw having a light beam alignment system |
US11/156,358 Expired - Fee Related US7398719B2 (en) | 2001-05-18 | 2005-06-17 | Miter saw having a light beam alignment system |
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US09/860,898 Expired - Fee Related US6755107B2 (en) | 2001-05-18 | 2001-05-18 | Miter saw having a light beam alignment system |
US10/774,854 Abandoned US20040159199A1 (en) | 2001-05-18 | 2004-02-09 | Miter saw having a light beam alignment system |
Country Status (8)
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US (3) | US6755107B2 (en) |
EP (2) | EP1470883B1 (en) |
JP (1) | JP2002347002A (en) |
CN (1) | CN1301186C (en) |
AU (1) | AU8364001A (en) |
CA (1) | CA2359453C (en) |
DE (2) | DE60106396T2 (en) |
HK (1) | HK1052154A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080105100A1 (en) * | 2006-11-08 | 2008-05-08 | Eastway Fair Company Limited | Adjustable laser module |
US20080121082A1 (en) * | 2006-11-08 | 2008-05-29 | Eastway Fair Company Limited | Cutting device and laser module for use therewith |
US20080289193A1 (en) * | 2005-12-27 | 2008-11-27 | Justus Lamprecht | Safety Guard For A Hand-Guided Tool |
US20110303060A1 (en) * | 2009-01-29 | 2011-12-15 | Yukihiro Shima | Motorized cutter, motorized cutter with wheels, and cutting method |
US20120085214A1 (en) * | 2010-10-08 | 2012-04-12 | Robert Bosch Gmbh | Light guide alignment device for power tool |
Families Citing this family (86)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7207251B2 (en) | 1999-02-05 | 2007-04-24 | Hitachi Koki Co., Ltd. | Cutter with laser generator that irradiates cutting position on workpiece to facilitate alignment of blade with cutting position |
US6755107B2 (en) * | 2001-05-18 | 2004-06-29 | One World Technologies Lmt. | Miter saw having a light beam alignment system |
US6915727B2 (en) * | 2001-07-31 | 2005-07-12 | Raymond Caluori | Angled light beam rotary saw cut alignment device |
US7159497B2 (en) * | 2002-01-25 | 2007-01-09 | Eastway Fair Company Ltd. | Light beam alignment system |
US7343841B2 (en) * | 2002-02-15 | 2008-03-18 | Black & Decker Inc. | Blade clamp assembly |
US20060101975A1 (en) * | 2002-02-15 | 2006-05-18 | Alan Phillips | Blade clamp assembly |
US8004664B2 (en) | 2002-04-18 | 2011-08-23 | Chang Type Industrial Company | Power tool control system |
CN2561565Y (en) * | 2002-05-14 | 2003-07-23 | 南京泉峰国际贸易有限公司 | Electric annular saw with laser aligning device |
US20030233921A1 (en) * | 2002-06-19 | 2003-12-25 | Garcia Jaime E. | Cutter with optical alignment system |
US7836806B2 (en) * | 2002-07-29 | 2010-11-23 | Caluori Raymond J | Positive-angled light beam rotary saw cut alignment device |
US20050011325A1 (en) * | 2002-07-29 | 2005-01-20 | Caluori Raymond J. | Light beam rotary saw cut alignment device |
TW554813U (en) * | 2002-09-26 | 2003-09-21 | P & F Brother Ind Corp | Lifting structure for eye shielding cover of cutting machine |
US7243587B2 (en) * | 2002-12-16 | 2007-07-17 | Black & Decker Inc. | Pivoting rear blade guard |
DE10301440B4 (en) * | 2003-01-15 | 2005-03-03 | Gottlieb Nestle Gmbh | marking |
DE102004033576B4 (en) * | 2003-01-15 | 2007-02-22 | Gottlieb Nestle Gmbh | marking |
JP4186663B2 (en) * | 2003-03-20 | 2008-11-26 | 日立工機株式会社 | Tabletop circular saw |
TW566252U (en) * | 2003-04-01 | 2003-12-11 | Chi-Ying Wu | Exquisite type delineation marking instrument |
TW590197U (en) * | 2003-05-08 | 2004-06-01 | P & F Brother Ind Corp | Linking lighting device for cutting device |
US20050103176A1 (en) * | 2003-10-10 | 2005-05-19 | Ross Zhang | Sawing direction positioning system for a woodworking bandsaw |
US7029149B2 (en) * | 2003-11-18 | 2006-04-18 | Hsin Chih Tung | Laser alignment device of a circular saw machine |
CA2488994A1 (en) * | 2003-12-02 | 2005-06-02 | Michael Parrish | Laser guide paper trimmer |
US7770502B2 (en) * | 2003-12-02 | 2010-08-10 | Elmer's Products Inc | Laser-guided paper trimmer |
US20050195592A1 (en) * | 2004-03-08 | 2005-09-08 | Hung - Chi Hsu | Handsaw having sawing guide function |
WO2005118195A2 (en) * | 2004-05-28 | 2005-12-15 | Scientific Molding Corporation Ltd. | Hand-held circular saw, in particular plunge-cut saw |
JP4656376B2 (en) * | 2004-06-30 | 2011-03-23 | 日立工機株式会社 | Tabletop cutting machine |
US20060037445A1 (en) * | 2004-08-18 | 2006-02-23 | Sergyeyenko Oleksiy P | Circular saw with laser and protractor |
GB0423283D0 (en) * | 2004-10-20 | 2004-11-24 | Gmca Pty Ltd | Guidance system for power tool |
US20060162513A1 (en) * | 2005-01-21 | 2006-07-27 | General Binding Corporation | Trimmer with light guidance |
US7219437B2 (en) * | 2005-01-28 | 2007-05-22 | Brent Dallman | Laser guided work device |
US20060168828A1 (en) * | 2005-01-28 | 2006-08-03 | Brent Dallman | Laser guided work device |
US8910552B2 (en) * | 2005-03-01 | 2014-12-16 | Blue Collar Ventures, L.L.C. | Movable saw apparatus and method |
TWI268188B (en) * | 2005-03-28 | 2006-12-11 | Quarton Inc | Cut line indicator |
CA2542570A1 (en) * | 2005-04-13 | 2006-10-13 | Black & Decker Inc. | Chop saw |
NL1028920C2 (en) * | 2005-04-29 | 2006-10-31 | Bosch Gmbh Robert | Electric tool for editing an object. |
TWM286734U (en) * | 2005-08-10 | 2006-02-01 | Rexon Ind Corp Ltd | Laser labeling apparatus for circular saw machine |
EP1759797A1 (en) | 2005-09-05 | 2007-03-07 | Quarton Inc. | Cutting line indicator |
US20070107235A1 (en) * | 2005-11-15 | 2007-05-17 | Eastway Fair Company Limited Of Trident Chambers | Light assembly for circular saw |
US8882777B2 (en) * | 2006-03-17 | 2014-11-11 | Zimmer Technology, Inc. | Indicator device for use with a surgical guide instrument |
US20070289513A1 (en) * | 2006-06-16 | 2007-12-20 | Hsin-Chin Chen | Adjusting structure of a laser indicator of a sawing machine |
US20080017005A1 (en) * | 2006-07-18 | 2008-01-24 | Hsin-Chih Tung | Light path molding apparatus of cutting machine tool |
US20080034931A1 (en) * | 2006-08-10 | 2008-02-14 | Nash Derek J | Laser guide |
US7735403B2 (en) | 2006-09-26 | 2010-06-15 | Robert Bosch Gmbh | Alignment system for a fence for a table saw |
US20080105658A1 (en) * | 2006-11-08 | 2008-05-08 | Eastway Fair Company Limited | Laser module with laser generator control switch |
US7966738B2 (en) * | 2006-12-06 | 2011-06-28 | Irwin Industrial Tool Company | Laser guide |
US20080163505A1 (en) * | 2007-01-09 | 2008-07-10 | Hsu Chin-Ho | Laser Indicated Pneumatic Cutter |
US20090077817A1 (en) * | 2007-09-21 | 2009-03-26 | Black & Decker Inc. | Dash-dot laser cutting guide tiltable from a housing for battery replacement |
US8033026B2 (en) * | 2007-09-21 | 2011-10-11 | Black & Decker Inc. | Adjustable and removable keel assembly and blade guide for a jigsaw |
US9827623B2 (en) | 2007-09-21 | 2017-11-28 | Black & Decker Inc. | Control of reciprocation speed and orbital magnitude of a jigsaw with a plurality of material and/or task descriptive icons |
US9981327B2 (en) | 2007-09-21 | 2018-05-29 | Black & Decker Inc. | Cutting angle indicator in jigsaw housing with dust extraction |
US10029322B2 (en) * | 2007-09-21 | 2018-07-24 | Black & Decker Inc. | Housing of a cutting tool including blade storage, integral blade guard and motor ventilation pathway |
US8067916B2 (en) * | 2008-01-23 | 2011-11-29 | Su Hak Auh | Power cutting tool with synchronized dust control device |
TW200938352A (en) * | 2008-03-05 | 2009-09-16 | Durq Machinery Corp | Miter saw with safety positioning structure of protection cap |
WO2009124600A1 (en) * | 2008-04-11 | 2009-10-15 | Bic-Violex Sa | Razor handle having a retractable razor head carrier and a movable flap, and razor having such a handle |
WO2009155327A1 (en) * | 2008-06-18 | 2009-12-23 | Fiskars Brands, Inc. | Material trimmer with illuminated cut line indicator |
TWI332445B (en) * | 2008-12-05 | 2010-11-01 | Pegatron Corp | Stapler |
CN101745690B (en) * | 2008-12-19 | 2012-03-28 | 苏州宝时得电动工具有限公司 | Bench saw |
JP5526442B2 (en) * | 2009-03-05 | 2014-06-18 | マックス株式会社 | Portable cutting machine |
US8398176B2 (en) * | 2009-06-03 | 2013-03-19 | Asphalt Zipper, Inc. | Asphalt milling attachment with depth control and bit access |
CN102157111A (en) * | 2010-02-11 | 2011-08-17 | 张皓 | LED (Light Emitting Diode) graphic display device |
US10265787B2 (en) | 2010-04-28 | 2019-04-23 | Robert Bosch Tool Corporation | Laser alignment system for saw |
US8667877B2 (en) | 2010-10-22 | 2014-03-11 | Robert Bosch Gmbh | Miter saw with dual tracking light |
US8616102B2 (en) | 2011-04-07 | 2013-12-31 | Robert Bosch Gmbh | Optical alignment device for a table saw |
US20120255414A1 (en) * | 2011-04-07 | 2012-10-11 | Robert Bosch Gmbh | Modular Laser Alignment Device for Power Tool |
US8578615B2 (en) | 2011-09-12 | 2013-11-12 | Black & Decker Inc. | Jigsaw with deployable keel and tiltable shoe |
TWI556893B (en) | 2013-03-07 | 2016-11-11 | 力山工業股份有限公司 | Laser alignment device for circular saw |
US9559628B2 (en) | 2013-10-25 | 2017-01-31 | Black & Decker Inc. | Handheld power tool with compact AC switch |
US10309058B2 (en) | 2014-11-26 | 2019-06-04 | International Paper Company | Paper trim cut measurement device and method |
DE102014224571A1 (en) * | 2014-12-02 | 2016-06-02 | Robert Bosch Gmbh | Cutting length indicator |
BR112017012423A2 (en) * | 2014-12-12 | 2018-01-02 | Mele Antonio | battery powered laser device that shows the cutting path to get equal parts of a cake, pizza or similar foods |
DE102014226025A1 (en) | 2014-12-16 | 2016-06-16 | Robert Bosch Gmbh | Optical display device unit for use in an external application unit |
WO2016138281A1 (en) * | 2015-02-25 | 2016-09-01 | Milwaukee Electric Tool Corporation | Miter saw |
JP6480274B2 (en) * | 2015-06-22 | 2019-03-06 | 日立Geニュークリア・エナジー株式会社 | Rotating tool, processing state monitoring device and machine tool |
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WO2017165104A1 (en) | 2016-03-25 | 2017-09-28 | Frank Sonny | Leveling device assembly for a hydraulic hammer |
JP6847648B2 (en) * | 2016-12-05 | 2021-03-24 | 株式会社マキタ | Cutting machine |
EP3446842A1 (en) | 2017-08-24 | 2019-02-27 | Basell Polyolefine GmbH | Method for aligning a cutter plate of a pelletizer using a remote alignment adjustment device |
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DE102019200366A1 (en) | 2019-01-14 | 2020-07-16 | Festool Gmbh | Saw blade cover, fence unit and table saw |
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US11213903B2 (en) * | 2020-01-03 | 2022-01-04 | Dmt Holdings, Inc. | Sawing machine |
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CN115916494A (en) * | 2020-06-25 | 2023-04-04 | 费斯托工具有限责任公司 | Circular saw including a transparent window extending within an opening of a blade guard and covering a fastening structure |
JP2022133620A (en) * | 2021-03-02 | 2022-09-14 | 株式会社マキタ | Cutting machine |
Citations (97)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1476238A (en) * | 1922-02-20 | 1923-12-04 | Sumner M Bump | Indicator for edging saws |
US1804764A (en) * | 1928-12-01 | 1931-05-12 | Edwin J Grant | Apparatus for and method of cutting material |
US1993219A (en) * | 1933-07-12 | 1935-03-05 | Herberts Machinery Company Ltd | Circular saw |
US2095330A (en) * | 1936-07-25 | 1937-10-12 | Duro Metal Prod Co | Bench saw |
US2307820A (en) * | 1940-02-20 | 1943-01-12 | Charles M Butters | Shadow-line indicator for trimming saws |
US2313686A (en) * | 1941-03-17 | 1943-03-09 | Uremovich Mark | Saw guard |
US2357194A (en) * | 1942-01-13 | 1944-08-29 | Cincinnati Shaper Co | Gauging device |
US2440950A (en) * | 1945-08-04 | 1948-05-04 | John H Hill | Machine for cutting work pieces |
US2488947A (en) * | 1945-05-28 | 1949-11-22 | American Floor Surfacing Mach | Rotary power handsaw |
US2806492A (en) * | 1954-04-23 | 1957-09-17 | Raimann G M B H Fa B | Projected light means for positioning a work-piece on a machine tool |
US2876810A (en) * | 1958-03-04 | 1959-03-10 | Joseph M Peterson | Point of operation saw guard |
US3123111A (en) * | 1964-03-03 | Sawdust discharge for circular saw | ||
US3496814A (en) * | 1967-04-22 | 1970-02-24 | Canadian Converters Co Ltd | Method of blending designs |
US4078869A (en) * | 1977-01-17 | 1978-03-14 | Honeycutt Damon P | Two-way right angle drill |
US4257297A (en) * | 1979-01-31 | 1981-03-24 | Peter Nidbella | Circular saw with visual cut line indicator |
US4335510A (en) * | 1980-06-18 | 1982-06-22 | Black & Decker, Inc. | String trimmer |
US4383373A (en) * | 1980-10-08 | 1983-05-17 | Alain Couturier | Method of and apparatus for calibrating an adjustable jig |
US4413662A (en) * | 1981-06-08 | 1983-11-08 | Forest Industries Machine Corp. | Edging system |
US4450627A (en) * | 1981-07-06 | 1984-05-29 | Shindaiwa Kogyo Co., Ltd. | Device for determining a correct sawing position for a portable rotary sawing machine |
US4469931A (en) * | 1982-09-13 | 1984-09-04 | Macken John A | Laser assisted saw device |
US4503740A (en) * | 1982-01-18 | 1985-03-12 | Capital Machine Company, Inc. | Optical cutting edge locator for a cutting apparatus |
US4598481A (en) * | 1985-08-12 | 1986-07-08 | Hein-Werner Corporation | Intersecting laser alignment apparatus and method |
US4651732A (en) * | 1983-03-17 | 1987-03-24 | Frederick Philip R | Three-dimensional light guidance system for invasive procedures |
US4676130A (en) * | 1986-02-25 | 1987-06-30 | Filer & Stowell Co., Inc. | Lumber edger |
US4725933A (en) * | 1986-09-11 | 1988-02-16 | Fairway International, Inc. | Line guide projector |
US4805500A (en) * | 1985-06-29 | 1989-02-21 | Amada Company, Limited | Horizontal band saw machine |
US4817839A (en) * | 1987-02-13 | 1989-04-04 | Ipco Corporation | Rotary saw and method for sectioning dental models |
US4833782A (en) * | 1987-06-01 | 1989-05-30 | Robert E. Strauss | Saber saw tracing light |
US4836671A (en) * | 1985-04-08 | 1989-06-06 | Charles Lescrenier | Locating device |
US4892022A (en) * | 1988-09-20 | 1990-01-09 | Robert Bosch Power Tool Corporation | Safety guard for sawing power tool particularly mitre saw |
USD305542S (en) * | 1986-10-27 | 1990-01-16 | Ryobi Ltd. | Electric miter saw |
US4934233A (en) * | 1988-06-29 | 1990-06-19 | Emerson Electric Co. | Compound miter saw |
US4945797A (en) * | 1988-05-06 | 1990-08-07 | Buss Automation, Inc. | Automated multiple rip saw feeding apparatus |
US5038481A (en) * | 1990-05-04 | 1991-08-13 | Lonnie Smith | Saber saw tracking light |
US5060384A (en) * | 1990-12-06 | 1991-10-29 | Inertia Dynamics Corporation | Automatic head for a line trimmer |
US5121188A (en) * | 1990-05-16 | 1992-06-09 | Applied Laser Systems | Laser module assembly |
US5148232A (en) * | 1991-01-28 | 1992-09-15 | Intra Corporation | Laser apparatus and method for aligning a crankpin grinding machine |
US5199343A (en) * | 1991-10-09 | 1993-04-06 | Black & Decker Inc. | Power saw with louvered blade guard |
US5203245A (en) * | 1991-12-20 | 1993-04-20 | Emerson Electric Co. | Swinging blade guard assembly |
US5285708A (en) * | 1992-05-18 | 1994-02-15 | Porter-Cable Corporation | Miter saw alignment system |
USD346173S (en) * | 1993-01-04 | 1994-04-19 | Black & Decker Inc. | Miter saw |
US5316014A (en) * | 1992-02-07 | 1994-05-31 | Livingston Products, Inc. | Biopsy locator and guide |
US5320111A (en) * | 1992-02-07 | 1994-06-14 | Livingston Products, Inc. | Light beam locator and guide for a biopsy needle |
US5365822A (en) * | 1993-09-17 | 1994-11-22 | Stapleton Michael F | Cutting guide |
US5439328A (en) * | 1993-08-24 | 1995-08-08 | E. I. Du Pont De Nemours And Company | Single-head drill with video attachment |
US5446635A (en) * | 1993-06-24 | 1995-08-29 | Quarton, Inc. | Laser assembly for marking a line on a workpiece for guiding a cutting tool |
US5461790A (en) * | 1994-02-16 | 1995-10-31 | Olstowski; Franek | Circular saws with laser guides for more precise movement during cutting |
US5495784A (en) * | 1994-09-29 | 1996-03-05 | Chen; Ruey-Zon | Cutting depth setting device for a saw machine |
US5509337A (en) * | 1994-08-12 | 1996-04-23 | Premark Feg Corporatin | Ring guard for food slicing machine blade |
US5522683A (en) * | 1993-12-27 | 1996-06-04 | Uht Corporation | Drilling apparatus |
US5529441A (en) * | 1994-02-28 | 1996-06-25 | Cybernetics Products, Inc. | Drill coordinate optimization for multi-layer printed circuit board |
USD372484S (en) * | 1995-09-13 | 1996-08-06 | Black & Decker Inc. | Chop saw design |
US5546840A (en) * | 1992-10-28 | 1996-08-20 | Dienes Werke Fur Maschinenteile Gmbh & Co. Kg | Slitting machine with position check of the cutting edges |
US5630277A (en) * | 1994-08-18 | 1997-05-20 | Kabushiki Kaisha Ogura | Portable, power driven punching machine having an aiming beam |
US5662017A (en) * | 1994-09-28 | 1997-09-02 | Mellon; Ernesto Claude | Scroll saw |
USD383765S (en) * | 1996-07-03 | 1997-09-16 | Makita Corporation | Miter saw |
US5675899A (en) * | 1996-05-28 | 1997-10-14 | Webb; James | Rotary saw with laser beam alignment |
USD391973S (en) * | 1996-12-02 | 1998-03-10 | Black & Decker Inc. | Sliding compound miter saw |
US5724875A (en) * | 1995-10-10 | 1998-03-10 | Black & Decker Inc. | Guard and control apparatuses for sliding compound miter saw |
US5741096A (en) * | 1995-11-30 | 1998-04-21 | The Boeing Company | Line-laser assisted alignment apparatus |
US5782842A (en) * | 1995-01-16 | 1998-07-21 | Daum Gmbh | Medical instrument guidance apparatus and method |
USD400215S (en) * | 1997-09-10 | 1998-10-27 | Black & Decker Inc. | Sliding compound miter saw |
US5862727A (en) * | 1996-03-11 | 1999-01-26 | Kelly; Robert R. | Laser arbor |
US5911482A (en) * | 1996-05-31 | 1999-06-15 | Black & Decker, Inc. | Window assembly and lower saw guard |
US5918523A (en) * | 1998-04-03 | 1999-07-06 | Cutter; Jack | System for guiding cutting tool |
US5943931A (en) * | 1995-07-07 | 1999-08-31 | Black & Decker Inc. | Adjustable fence for a compound miter saw |
US5949810A (en) * | 1997-11-10 | 1999-09-07 | Jan A. Strand | Laser guide line system with cylindrical optic element |
US5957021A (en) * | 1995-10-10 | 1999-09-28 | Black & Decker, Inc. | Guard and control apparatuses for sliding compound miter saw |
US5995230A (en) * | 1996-08-02 | 1999-11-30 | Madlener; Wolfgang | Laser light barrier system for measuring tool and work pieces |
USD420370S (en) * | 1998-10-21 | 2000-02-08 | Makita Corporation | Miter saw |
USD421267S (en) * | 1998-10-06 | 2000-02-29 | Black & Decker Inc. | Sliding compound miter saw |
US6035757A (en) * | 1997-12-15 | 2000-03-14 | Caluori; Raymond | Rotary saw cut alignment device |
USD423526S (en) * | 1999-04-13 | 2000-04-25 | Ryobi North America, Inc. | Miter saw |
US6055734A (en) * | 1999-03-04 | 2000-05-02 | Ryobi North America, Inc. | Circular saw with blade viewing window |
USD424076S (en) * | 1999-02-24 | 2000-05-02 | Black & Decker Inc. | Mounting device for a cutting tool |
USD425083S (en) * | 1999-07-26 | 2000-05-16 | Delta International Machinery Corp. | Miter saw |
US6073621A (en) * | 1997-08-25 | 2000-06-13 | Cetrangolo; Dolivio L. | Apparatus for automatic layout and cutting corner lines in stone |
USD428426S (en) * | 1999-04-13 | 2000-07-18 | Ryobi North America, Inc. | Miter saw |
US6170370B1 (en) * | 1998-08-19 | 2001-01-09 | Sommerville Design & Manufacturing Inc. | Circular saw splitter device with integral anti-kick back |
US6182548B1 (en) * | 1995-10-10 | 2001-02-06 | Black & Decker Inc. | Guard and control apparatuses for sliding compound miter saw |
US6203112B1 (en) * | 1999-05-03 | 2001-03-20 | American Standards Construction Corp. | Attachable road cutting apparatus |
USD441771S1 (en) * | 2000-06-08 | 2001-05-08 | Black & Decker Inc. | Miter saw |
US6237230B1 (en) * | 1996-05-31 | 2001-05-29 | Black & Decker, Inc. | Viewing window for circular saw guard |
US6263584B1 (en) * | 1997-08-08 | 2001-07-24 | Barry S. Owens | Alignment apparatus and method of using same |
US20010029819A1 (en) * | 2000-04-18 | 2001-10-18 | Katsumi Okouchi | Lighted cutting tools |
US20010034951A1 (en) * | 2000-03-17 | 2001-11-01 | Sears John E. | Alignment tool apparatus and method |
US20020000148A1 (en) * | 2000-04-14 | 2002-01-03 | Brun Georges L. | Device for trimming wane-affected planks |
US6397717B1 (en) * | 1992-03-13 | 2002-06-04 | Lance H. Waite | Cut line indicator for power cutting material |
US6403920B1 (en) * | 1999-02-09 | 2002-06-11 | Matsushita Electric Industrial Co., Ltd. | Laser processing apparatus and method |
US6481322B1 (en) * | 2000-01-13 | 2002-11-19 | Limate Corporation | Sawing apparatus combined with marking device |
US20020170404A1 (en) * | 2001-05-18 | 2002-11-21 | Peot David G. | Miter saw having a light beam alignment system |
US6523447B2 (en) * | 1997-09-26 | 2003-02-25 | Black & Decker Inc. | Cordless chop saw |
US6593587B2 (en) * | 2000-03-10 | 2003-07-15 | Perceptron, Inc. | Non-contact measurement device for quickly and accurately obtaining dimensional measurement data |
US20030197138A1 (en) * | 2000-11-10 | 2003-10-23 | Pease Alfred A. | Modular non-contact measurement device for quickly and accurately obtaining dimensional measurement data |
US6688203B2 (en) * | 2001-11-27 | 2004-02-10 | Rexon Co., Ltd. | Circular sawing machine having indication device |
US6742430B2 (en) * | 2002-03-18 | 2004-06-01 | Rexon Co., Ltd. | Circular sawing machine having a hidden-type infrared guide device |
US6757984B2 (en) * | 2002-06-11 | 2004-07-06 | David N. Harris | Saw guide for use with lined sheet material |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2167189A (en) * | 1937-02-27 | 1939-07-25 | Verderber Joseph | Machine tool |
US2267189A (en) * | 1940-01-11 | 1941-12-23 | Brown Brockmeyer Co Inc | Combined shield and illuminating means for grinding wheels |
US2623555A (en) | 1948-07-14 | 1952-12-30 | Rockwell Mfg Co | Saw guard |
GB961484A (en) * | 1962-03-02 | 1964-06-24 | Sunbeam Corp | A portable electric saw |
US3780777A (en) | 1971-10-06 | 1973-12-25 | Oliver Machinery Co | Defecting saw |
DE3733028A1 (en) * | 1986-09-30 | 1988-04-07 | Pioneer Electronic Corp | RADIO RECEIVER WITH AUTOMATIC SEARCH SEARCH |
JP2717534B2 (en) * | 1986-12-29 | 1998-02-18 | 株式会社マキタ | Safety cover device for circular saw machine |
US4885965A (en) | 1987-02-13 | 1989-12-12 | Ipco Corporation | Rotary saw for sectioning dental models |
US4887193A (en) | 1987-12-15 | 1989-12-12 | Dieckmann Ralf E | Mounting apparatus for a lamp or similar device |
US4885967A (en) | 1988-08-25 | 1989-12-12 | J. Gibson Mcilvain Company | Laser alignment device for sawmills |
DE3922849A1 (en) | 1989-07-12 | 1991-01-24 | Reich Maschf Gmbh Karl | Cutting indicator for circular hand-saw - uses laser beam to guide blade precisely around cutting pattern |
US5375495A (en) * | 1992-05-18 | 1994-12-27 | Porter-Cable Corporation | Optical alignment system for circular power saws |
ATE213687T1 (en) | 1995-04-04 | 2002-03-15 | Nigel Iivari Anderson | LIGHT PROJECTION DEVICE |
US5787801A (en) | 1996-05-03 | 1998-08-04 | Sunkist Growers, Inc. | Apparatus and method for coring and sectionizing fruit |
USD388442S (en) | 1996-06-17 | 1997-12-30 | Makita Corporation | Miter saw |
-
2001
- 2001-05-18 US US09/860,898 patent/US6755107B2/en not_active Expired - Fee Related
- 2001-10-17 CA CA 2359453 patent/CA2359453C/en not_active Expired - Fee Related
- 2001-10-26 AU AU83640/01A patent/AU8364001A/en not_active Abandoned
- 2001-11-02 EP EP20040018171 patent/EP1470883B1/en not_active Expired - Lifetime
- 2001-11-02 DE DE2001606396 patent/DE60106396T2/en not_active Expired - Lifetime
- 2001-11-02 DE DE2001633141 patent/DE60133141T2/en not_active Expired - Lifetime
- 2001-11-02 JP JP2001337423A patent/JP2002347002A/en active Pending
- 2001-11-02 EP EP20010309338 patent/EP1258305B1/en not_active Expired - Lifetime
- 2001-11-02 CN CNB011378506A patent/CN1301186C/en not_active Expired - Lifetime
-
2003
- 2003-06-23 HK HK03104493.1A patent/HK1052154A1/en unknown
-
2004
- 2004-02-09 US US10/774,854 patent/US20040159199A1/en not_active Abandoned
-
2005
- 2005-06-17 US US11/156,358 patent/US7398719B2/en not_active Expired - Fee Related
Patent Citations (100)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3123111A (en) * | 1964-03-03 | Sawdust discharge for circular saw | ||
US1476238A (en) * | 1922-02-20 | 1923-12-04 | Sumner M Bump | Indicator for edging saws |
US1804764A (en) * | 1928-12-01 | 1931-05-12 | Edwin J Grant | Apparatus for and method of cutting material |
US1993219A (en) * | 1933-07-12 | 1935-03-05 | Herberts Machinery Company Ltd | Circular saw |
US2095330A (en) * | 1936-07-25 | 1937-10-12 | Duro Metal Prod Co | Bench saw |
US2307820A (en) * | 1940-02-20 | 1943-01-12 | Charles M Butters | Shadow-line indicator for trimming saws |
US2313686A (en) * | 1941-03-17 | 1943-03-09 | Uremovich Mark | Saw guard |
US2357194A (en) * | 1942-01-13 | 1944-08-29 | Cincinnati Shaper Co | Gauging device |
US2488947A (en) * | 1945-05-28 | 1949-11-22 | American Floor Surfacing Mach | Rotary power handsaw |
US2440950A (en) * | 1945-08-04 | 1948-05-04 | John H Hill | Machine for cutting work pieces |
US2806492A (en) * | 1954-04-23 | 1957-09-17 | Raimann G M B H Fa B | Projected light means for positioning a work-piece on a machine tool |
US2876810A (en) * | 1958-03-04 | 1959-03-10 | Joseph M Peterson | Point of operation saw guard |
US3496814A (en) * | 1967-04-22 | 1970-02-24 | Canadian Converters Co Ltd | Method of blending designs |
US4078869A (en) * | 1977-01-17 | 1978-03-14 | Honeycutt Damon P | Two-way right angle drill |
US4257297A (en) * | 1979-01-31 | 1981-03-24 | Peter Nidbella | Circular saw with visual cut line indicator |
US4335510A (en) * | 1980-06-18 | 1982-06-22 | Black & Decker, Inc. | String trimmer |
US4383373A (en) * | 1980-10-08 | 1983-05-17 | Alain Couturier | Method of and apparatus for calibrating an adjustable jig |
US4413662A (en) * | 1981-06-08 | 1983-11-08 | Forest Industries Machine Corp. | Edging system |
US4450627A (en) * | 1981-07-06 | 1984-05-29 | Shindaiwa Kogyo Co., Ltd. | Device for determining a correct sawing position for a portable rotary sawing machine |
US4503740A (en) * | 1982-01-18 | 1985-03-12 | Capital Machine Company, Inc. | Optical cutting edge locator for a cutting apparatus |
US4469931A (en) * | 1982-09-13 | 1984-09-04 | Macken John A | Laser assisted saw device |
US4651732A (en) * | 1983-03-17 | 1987-03-24 | Frederick Philip R | Three-dimensional light guidance system for invasive procedures |
US4836671A (en) * | 1985-04-08 | 1989-06-06 | Charles Lescrenier | Locating device |
US4805500A (en) * | 1985-06-29 | 1989-02-21 | Amada Company, Limited | Horizontal band saw machine |
US4598481A (en) * | 1985-08-12 | 1986-07-08 | Hein-Werner Corporation | Intersecting laser alignment apparatus and method |
US4676130A (en) * | 1986-02-25 | 1987-06-30 | Filer & Stowell Co., Inc. | Lumber edger |
US4725933A (en) * | 1986-09-11 | 1988-02-16 | Fairway International, Inc. | Line guide projector |
USD305542S (en) * | 1986-10-27 | 1990-01-16 | Ryobi Ltd. | Electric miter saw |
US4817839A (en) * | 1987-02-13 | 1989-04-04 | Ipco Corporation | Rotary saw and method for sectioning dental models |
US4833782A (en) * | 1987-06-01 | 1989-05-30 | Robert E. Strauss | Saber saw tracing light |
US4945797A (en) * | 1988-05-06 | 1990-08-07 | Buss Automation, Inc. | Automated multiple rip saw feeding apparatus |
US4934233A (en) * | 1988-06-29 | 1990-06-19 | Emerson Electric Co. | Compound miter saw |
US4934233B1 (en) * | 1988-06-29 | 1994-08-23 | Emerson Electric Co | Compound miter saw |
US4892022A (en) * | 1988-09-20 | 1990-01-09 | Robert Bosch Power Tool Corporation | Safety guard for sawing power tool particularly mitre saw |
US5038481A (en) * | 1990-05-04 | 1991-08-13 | Lonnie Smith | Saber saw tracking light |
US5121188A (en) * | 1990-05-16 | 1992-06-09 | Applied Laser Systems | Laser module assembly |
US5060384A (en) * | 1990-12-06 | 1991-10-29 | Inertia Dynamics Corporation | Automatic head for a line trimmer |
US5148232A (en) * | 1991-01-28 | 1992-09-15 | Intra Corporation | Laser apparatus and method for aligning a crankpin grinding machine |
US5199343A (en) * | 1991-10-09 | 1993-04-06 | Black & Decker Inc. | Power saw with louvered blade guard |
US5203245A (en) * | 1991-12-20 | 1993-04-20 | Emerson Electric Co. | Swinging blade guard assembly |
US5316014A (en) * | 1992-02-07 | 1994-05-31 | Livingston Products, Inc. | Biopsy locator and guide |
US5320111A (en) * | 1992-02-07 | 1994-06-14 | Livingston Products, Inc. | Light beam locator and guide for a biopsy needle |
US6578459B2 (en) * | 1992-03-13 | 2003-06-17 | Lance Waite | Method for power saw having cut line indicator |
US6397717B1 (en) * | 1992-03-13 | 2002-06-04 | Lance H. Waite | Cut line indicator for power cutting material |
US5285708A (en) * | 1992-05-18 | 1994-02-15 | Porter-Cable Corporation | Miter saw alignment system |
US5546840A (en) * | 1992-10-28 | 1996-08-20 | Dienes Werke Fur Maschinenteile Gmbh & Co. Kg | Slitting machine with position check of the cutting edges |
USD346173S (en) * | 1993-01-04 | 1994-04-19 | Black & Decker Inc. | Miter saw |
US5446635A (en) * | 1993-06-24 | 1995-08-29 | Quarton, Inc. | Laser assembly for marking a line on a workpiece for guiding a cutting tool |
US5439328A (en) * | 1993-08-24 | 1995-08-08 | E. I. Du Pont De Nemours And Company | Single-head drill with video attachment |
US5365822A (en) * | 1993-09-17 | 1994-11-22 | Stapleton Michael F | Cutting guide |
US5522683A (en) * | 1993-12-27 | 1996-06-04 | Uht Corporation | Drilling apparatus |
US5461790A (en) * | 1994-02-16 | 1995-10-31 | Olstowski; Franek | Circular saws with laser guides for more precise movement during cutting |
US5529441A (en) * | 1994-02-28 | 1996-06-25 | Cybernetics Products, Inc. | Drill coordinate optimization for multi-layer printed circuit board |
US5509337A (en) * | 1994-08-12 | 1996-04-23 | Premark Feg Corporatin | Ring guard for food slicing machine blade |
US5630277A (en) * | 1994-08-18 | 1997-05-20 | Kabushiki Kaisha Ogura | Portable, power driven punching machine having an aiming beam |
US5662017A (en) * | 1994-09-28 | 1997-09-02 | Mellon; Ernesto Claude | Scroll saw |
US5495784A (en) * | 1994-09-29 | 1996-03-05 | Chen; Ruey-Zon | Cutting depth setting device for a saw machine |
US5782842A (en) * | 1995-01-16 | 1998-07-21 | Daum Gmbh | Medical instrument guidance apparatus and method |
US5943931A (en) * | 1995-07-07 | 1999-08-31 | Black & Decker Inc. | Adjustable fence for a compound miter saw |
USD372484S (en) * | 1995-09-13 | 1996-08-06 | Black & Decker Inc. | Chop saw design |
US5724875A (en) * | 1995-10-10 | 1998-03-10 | Black & Decker Inc. | Guard and control apparatuses for sliding compound miter saw |
US5957021A (en) * | 1995-10-10 | 1999-09-28 | Black & Decker, Inc. | Guard and control apparatuses for sliding compound miter saw |
US6182548B1 (en) * | 1995-10-10 | 2001-02-06 | Black & Decker Inc. | Guard and control apparatuses for sliding compound miter saw |
US5741096A (en) * | 1995-11-30 | 1998-04-21 | The Boeing Company | Line-laser assisted alignment apparatus |
US5862727A (en) * | 1996-03-11 | 1999-01-26 | Kelly; Robert R. | Laser arbor |
US5675899A (en) * | 1996-05-28 | 1997-10-14 | Webb; James | Rotary saw with laser beam alignment |
US5911482A (en) * | 1996-05-31 | 1999-06-15 | Black & Decker, Inc. | Window assembly and lower saw guard |
US6237230B1 (en) * | 1996-05-31 | 2001-05-29 | Black & Decker, Inc. | Viewing window for circular saw guard |
USD383765S (en) * | 1996-07-03 | 1997-09-16 | Makita Corporation | Miter saw |
US5995230A (en) * | 1996-08-02 | 1999-11-30 | Madlener; Wolfgang | Laser light barrier system for measuring tool and work pieces |
USD391973S (en) * | 1996-12-02 | 1998-03-10 | Black & Decker Inc. | Sliding compound miter saw |
US6263584B1 (en) * | 1997-08-08 | 2001-07-24 | Barry S. Owens | Alignment apparatus and method of using same |
US6073621A (en) * | 1997-08-25 | 2000-06-13 | Cetrangolo; Dolivio L. | Apparatus for automatic layout and cutting corner lines in stone |
USD400215S (en) * | 1997-09-10 | 1998-10-27 | Black & Decker Inc. | Sliding compound miter saw |
US6523447B2 (en) * | 1997-09-26 | 2003-02-25 | Black & Decker Inc. | Cordless chop saw |
US5949810A (en) * | 1997-11-10 | 1999-09-07 | Jan A. Strand | Laser guide line system with cylindrical optic element |
US6035757A (en) * | 1997-12-15 | 2000-03-14 | Caluori; Raymond | Rotary saw cut alignment device |
US5918523A (en) * | 1998-04-03 | 1999-07-06 | Cutter; Jack | System for guiding cutting tool |
US6170370B1 (en) * | 1998-08-19 | 2001-01-09 | Sommerville Design & Manufacturing Inc. | Circular saw splitter device with integral anti-kick back |
USD421267S (en) * | 1998-10-06 | 2000-02-29 | Black & Decker Inc. | Sliding compound miter saw |
USD420370S (en) * | 1998-10-21 | 2000-02-08 | Makita Corporation | Miter saw |
US6403920B1 (en) * | 1999-02-09 | 2002-06-11 | Matsushita Electric Industrial Co., Ltd. | Laser processing apparatus and method |
USD424076S (en) * | 1999-02-24 | 2000-05-02 | Black & Decker Inc. | Mounting device for a cutting tool |
US6055734A (en) * | 1999-03-04 | 2000-05-02 | Ryobi North America, Inc. | Circular saw with blade viewing window |
USD428426S (en) * | 1999-04-13 | 2000-07-18 | Ryobi North America, Inc. | Miter saw |
USD423526S (en) * | 1999-04-13 | 2000-04-25 | Ryobi North America, Inc. | Miter saw |
US6203112B1 (en) * | 1999-05-03 | 2001-03-20 | American Standards Construction Corp. | Attachable road cutting apparatus |
USD425083S (en) * | 1999-07-26 | 2000-05-16 | Delta International Machinery Corp. | Miter saw |
US6481322B1 (en) * | 2000-01-13 | 2002-11-19 | Limate Corporation | Sawing apparatus combined with marking device |
US6593587B2 (en) * | 2000-03-10 | 2003-07-15 | Perceptron, Inc. | Non-contact measurement device for quickly and accurately obtaining dimensional measurement data |
US20010034951A1 (en) * | 2000-03-17 | 2001-11-01 | Sears John E. | Alignment tool apparatus and method |
US20020000148A1 (en) * | 2000-04-14 | 2002-01-03 | Brun Georges L. | Device for trimming wane-affected planks |
US20010029819A1 (en) * | 2000-04-18 | 2001-10-18 | Katsumi Okouchi | Lighted cutting tools |
USD441771S1 (en) * | 2000-06-08 | 2001-05-08 | Black & Decker Inc. | Miter saw |
US20030197138A1 (en) * | 2000-11-10 | 2003-10-23 | Pease Alfred A. | Modular non-contact measurement device for quickly and accurately obtaining dimensional measurement data |
US20020170404A1 (en) * | 2001-05-18 | 2002-11-21 | Peot David G. | Miter saw having a light beam alignment system |
US6755107B2 (en) * | 2001-05-18 | 2004-06-29 | One World Technologies Lmt. | Miter saw having a light beam alignment system |
US6688203B2 (en) * | 2001-11-27 | 2004-02-10 | Rexon Co., Ltd. | Circular sawing machine having indication device |
US6742430B2 (en) * | 2002-03-18 | 2004-06-01 | Rexon Co., Ltd. | Circular sawing machine having a hidden-type infrared guide device |
US6757984B2 (en) * | 2002-06-11 | 2004-07-06 | David N. Harris | Saw guide for use with lined sheet material |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080289193A1 (en) * | 2005-12-27 | 2008-11-27 | Justus Lamprecht | Safety Guard For A Hand-Guided Tool |
US20080105100A1 (en) * | 2006-11-08 | 2008-05-08 | Eastway Fair Company Limited | Adjustable laser module |
US20080121082A1 (en) * | 2006-11-08 | 2008-05-29 | Eastway Fair Company Limited | Cutting device and laser module for use therewith |
US7556401B2 (en) | 2006-11-08 | 2009-07-07 | Eastway Fair Company Limited | Adjustable laser module |
US20110303060A1 (en) * | 2009-01-29 | 2011-12-15 | Yukihiro Shima | Motorized cutter, motorized cutter with wheels, and cutting method |
US8926024B2 (en) * | 2009-01-29 | 2015-01-06 | Hitachi Koki Co., Ltd. | Motorized cutter, motorized cutter with wheels, and cutting method |
US20120085214A1 (en) * | 2010-10-08 | 2012-04-12 | Robert Bosch Gmbh | Light guide alignment device for power tool |
Also Published As
Publication number | Publication date |
---|---|
EP1258305B1 (en) | 2004-10-13 |
US6755107B2 (en) | 2004-06-29 |
US7398719B2 (en) | 2008-07-15 |
EP1258305A2 (en) | 2002-11-20 |
EP1470883A2 (en) | 2004-10-27 |
DE60133141D1 (en) | 2008-04-17 |
CA2359453C (en) | 2005-05-17 |
US20040159199A1 (en) | 2004-08-19 |
EP1258305A3 (en) | 2002-12-04 |
HK1052154A1 (en) | 2003-09-05 |
DE60106396D1 (en) | 2004-11-18 |
EP1470883B1 (en) | 2008-03-05 |
US20020170404A1 (en) | 2002-11-21 |
AU8364001A (en) | 2002-11-21 |
JP2002347002A (en) | 2002-12-04 |
DE60133141T2 (en) | 2009-02-26 |
DE60106396T2 (en) | 2005-11-17 |
CA2359453A1 (en) | 2002-11-18 |
CN1386615A (en) | 2002-12-25 |
EP1470883A3 (en) | 2005-03-09 |
CN1301186C (en) | 2007-02-21 |
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